EP2269011A1 - Système de mesure ultrasonore - Google Patents

Système de mesure ultrasonore

Info

Publication number
EP2269011A1
EP2269011A1 EP09734184A EP09734184A EP2269011A1 EP 2269011 A1 EP2269011 A1 EP 2269011A1 EP 09734184 A EP09734184 A EP 09734184A EP 09734184 A EP09734184 A EP 09734184A EP 2269011 A1 EP2269011 A1 EP 2269011A1
Authority
EP
European Patent Office
Prior art keywords
housing part
measuring arrangement
ultrasonic measuring
measuring
ultrasonic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP09734184A
Other languages
German (de)
English (en)
Other versions
EP2269011B1 (fr
Inventor
Thomas Will
Martin Deutscher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MIB GmbH MESSTECHNIK und INDUSTRIEBERATUNG
Original Assignee
MIB GmbH MESSTECHNIK und INDUSTRIEBERATUNG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MIB GmbH MESSTECHNIK und INDUSTRIEBERATUNG filed Critical MIB GmbH MESSTECHNIK und INDUSTRIEBERATUNG
Publication of EP2269011A1 publication Critical patent/EP2269011A1/fr
Application granted granted Critical
Publication of EP2269011B1 publication Critical patent/EP2269011B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/02—Analysing fluids
    • G01N29/024—Analysing fluids by measuring propagation velocity or propagation time of acoustic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G01F1/667—Arrangements of transducers for ultrasonic flowmeters; Circuits for operating ultrasonic flowmeters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/006—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus characterised by the use of a particular material, e.g. anti-corrosive material
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/18—Supports or connecting means for meters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/01—Indexing codes associated with the measuring variable
    • G01N2291/017—Doppler techniques
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/028—Material parameters
    • G01N2291/02818—Density, viscosity
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/028—Material parameters
    • G01N2291/02881—Temperature
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/10—Number of transducers
    • G01N2291/102—Number of transducers one emitter, one receiver
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material

Definitions

  • the invention relates to an ultrasonic measuring arrangement for flow, sound velocity, density, viscosity and / or temperature measurement of flowable media, comprising a measuring tube having a measuring tube, which is arranged in a region of a measuring housing, wherein the ultrasonic measuring device for the transmission of the Measuring section in and against the flow direction of a medium and for signal recording at least two spaced-apart ultrasonic transceiver has as sensors. Moreover, the invention relates to a method for producing such an ultrasonic measuring arrangement.
  • EP 0 088 235 and EP 0 681 162 describe the U-shape, and otherwise also the Z-shape or the double Z-shape, depending on the available space and use form also further, basically arbitrarily complicated forms of measuring sections can be used.
  • DE 101 09 161 also discloses a measuring arrangement in which, within a device with a large nominal diameter, a smaller diameter is simulated, as it were, by means of a nozzle in the measuring tube by concentrating the flow through the nozzle over a small area.
  • a measuring arrangement in which, within a device with a large nominal diameter, a smaller diameter is simulated, as it were, by means of a nozzle in the measuring tube by concentrating the flow through the nozzle over a small area.
  • such arrangements have a fixed flow direction and thus can not measure reflux.
  • the object is achieved by an ultrasonic measuring arrangement of the aforementioned type, in which the measuring tube with the measuring housing is formed without seal and seamless as a one-piece housing part and that the sound path with the flow direction of the medium encloses an acute angle.
  • the relevant housing part of the ultrasound measuring arrangement according to the invention can thus be produced in a particularly simple manner in a single-stage injection molding process and is therefore seal-tight, and therefore also capillary-free, in particular in its wetted part.
  • a trouble-free, low-error measurement of flows succeeds in a design of the ultrasonic measuring device, in which the sound path is formed without reflection.
  • the sensors in the end areas of the measuring tube can advantageously be arranged without contact with regard to the medium in an embodiment of the ultrasonic measuring arrangement.
  • the cross section of the sound path extends over the longitudinal extent at substantially the same level as that of the measuring device. dium flowed through area changes.
  • the liquid channel is flattened with at least approximately the same cross-sectional area.
  • a well-integrated in the transport of the medium to be measured embodiment may be that the ultrasonic measuring device is provided with terminals which are arranged symmetrically with respect to a center plane extending transversely to the longitudinal extent of the housing part mirror plane.
  • An embodiment of the ultrasonic measuring arrangement facilitating the arrangement of additional devices on the measuring section can be provided such that an installation space, in particular with an access opening facing away from the measuring tube, is provided on the housing part.
  • the sensors of the ultrasonic measuring arrangement must be connected to at least one signal processing device for generating, detecting, processing and / or forwarding the ultrasonic signals.
  • a suitable development is particularly suitable, in which the housing part joined together with a further housing part forms a particularly closed installation space in which the arrangement of a signal processing device can be provided.
  • the arrangement of the signal processing device is also completely in the other housing part, and thus separable from the first, conceivable.
  • further housing parts can additionally be arranged on the first.
  • one or more signal processing devices can already be arranged in the first housing part, which may be provided for this purpose and can be closed.
  • Embodiments of the ultrasonic measuring arrangement which comply with the requirements with regard to hygiene and safety in applications in the food and chemical industry are particularly preferred, for which reason in particular the measuring tube and the measuring housing or parts thereof are made of a plastic, in particular a food grade and / or highly resistant Plastic, for example polyethylene (PE) or another polyolefin or a suitable polymeric fluorocarbon, such as perfluoroalkoxy (PFA) are provided.
  • PE polyethylene
  • PFA perfluoroalkoxy
  • fixing means are expediently arranged on the housing part for fixing the housing projections, for example with eyelets or threaded holes.
  • an ultrasound measuring arrangement is made available in a single, particularly simple production process, which has a reflection-free sound path and in which, in particular, the part of the ultrasound measuring arrangement in contact with the medium is free of capillaries and cavities.
  • the positive molds are formed identically and touch each other on a side surface over the substantial part of their longitudinal extension such that their casting already forms the measuring tube of the arrangement. In this way, it is only necessary to design a molding of a positive mold and then to produce it several times, while, moreover, only those regions of the housing part which do not directly affect the measuring section in the mold are to be taken into account on the casting mold itself.
  • the positive forms are each formed by a spike-like slide whose cross section changes with increasing length projecting into the casting mold.
  • the cross section of the two adjoining slides in the middle region of the measuring section forms an area with side areas and rounded ends running almost parallel, and in this case has no corner areas.
  • a further housing part is produced with the casting mold in the same casting operation, in particular a further housing part provided for arrangement on the first housing part, which can accommodate devices necessary for signal generation, detection and processing.
  • the installation space for additional facilities on the ultrasonic measuring device can also be formed by the first housing part.
  • a further variant of the method according to the invention can additionally provide that either the sensors are integrated into the mold during manufacture of the housing part prior to the casting process or are provided on the housing part from externally accessible receptacles for retrofitting the sensors, so that after the casting process either the complete measuring arrangement is already available or this is supplemented by sensors selected later.
  • FIG. 1 shows a perspective view of an inventive one-piece ultrasonic measuring arrangement with cutting aids for the visualization of longitudinal and cross sections along the sound path of the measuring section;
  • FIG. 2 shows a planar side view of a cutting aid from FIG. 1 taken from a central region of the measuring section
  • FIG. 3 shows a side view of a longitudinal section through the measuring tube of the ultrasonic measuring arrangement from FIG.
  • FIG. 1 shows an ultrasound measuring arrangement 1, denoted as a whole by 1, for flow, sound velocity, density, viscosity and / or temperature measurement of flowable media.
  • the measuring tube 2 of the ultrasonic measuring arrangement has a measuring section 3, and is arranged in a region of a measuring housing 4.
  • the ultrasound measuring arrangement 1 further points to the sound transmission through Measuring section 3 in and against the flow direction of a medium and for signal recording at least two spaced-apart, not shown ultrasonic transceiver as sensors.
  • the measuring tube 2 is in this case formed with the measuring housing 4 sealing and seamless as a one-piece made of a plastic in an injection molding process housing part 5 and the sound path includes with the flow direction of the medium an acute angle.
  • the housing part 5 is provided with connections 6 which form the inlet and outlet of the medium to be transported or of the medium to be measured. These connections 6 are arranged symmetrically with respect to a mirror plane (not shown) running transversely to the longitudinal extension of the housing part 5 in the middle of the housing.
  • a mirror plane (not shown) running transversely to the longitudinal extension of the housing part 5 in the middle of the housing.
  • the two openings 7 of the measuring tube 2 are opposite each other diagonally.
  • receptacles 8 for accommodation of one sensor, which is untouched by the respective medium, are respectively to be recognized.
  • the receptacles 8 are arranged adjacent to the openings 8 of the measuring tube 2 such that a diagonal, reflection-free sound path is formed in the measuring section 3.
  • the housing part 5 of the ultrasound measuring arrangement 1 is illustrated with cutting aids 10, 11 which merely serve the visualization, the middle vertical one of which is also shown in FIG.
  • These cutting aids 10, 11 represent at the location of their arrangement a transverse or longitudinal section of the housing part 5.
  • a bottom for example, designed as a cover, not shown, can subsequently arranged on the lower edge of the housing part 5 for the viewer, and this thereby, for example, after placement a signal processing device to be closed.
  • the cutting aids 10, 11 together show the course of the measuring section 3 within the measuring tube 2 and allow the viewer the sound path of the ultrasound between see the sensors and the fact that the cross section of the sound path over the longitudinal extent of the measuring section 3 at changes substantially constant, perfused by the medium surface.
  • FIG. 1 On the upper side of the housing part 5 facing the observer, there are two fixing means 9 located diagonally opposite one another in the end regions of the housing part 5, which are formed as projections with eyelets or threaded holes.
  • FIG. 2 shows the plane view of a cutting aid 10 as it is arranged in the middle region of the housing part 5 in FIG. 1 and which forms a section through the plastic material of the housing part 5.
  • the web-like edges 12 of the housing part 5, which form a downwardly open "U”, and in the upper area a hole-like opening surrounded by the material of the housing part, which shows the cross section of the measuring section 3 at this location, can be seen In this case, it can be seen that the cross-section of the measuring section is flattened in relation to that in the region of the opening 7 of the measuring section 3 without the cross-sectional area having changed significantly.
  • the measuring section 3 shows a longitudinal section through the measuring section 3 of the ultrasonic measuring device 1.
  • the measuring section 3 starts at openings 7 of the measuring tube 2, which are opposite each other diagonally.
  • a receptacle 8 for accommodating a Detectable sensor which is formed in a projecting from the edge of the measuring tube 2 region 16.
  • FIG. 3 also makes it clear that in the production of the measuring section 3 of the housing part 5, essentially the juxtaposition of two identically shaped, mandrel-like slides in the casting mold is sufficient, their contact line between the mutually opposite corners 15 of the protruding areas 16 extends in the region of the openings of the measuring section 3.
  • the invention described above relates to an ultrasonic measuring arrangement 1 for flow, sound velocity, density, viscosity and / or temperature measurement of flowable media, with a measuring tube 2 having a measuring section 3, which is arranged in a region of a measuring housing 4 ,
  • the ultrasonic measuring arrangement for the transmission of the measuring section 3 in and against the flow direction of a medium and for signal recording at least two spaced-apart ultrasonic transceiver has as sensors.
  • the measuring tube 3 with the measuring housing 4 sealing and seamless is formed as a one-piece housing part 5 and that the sound path with the flow direction of the medium encloses an acute angle.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Measuring Volume Flow (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

L'invention concerne un système de mesure ultrasonore (1) utilisé pour mesurer le débit, la vitesse du son, la masse volumique, la viscosité et/ou la température de milieux coulants. Ledit système de mesure comprend un tube de mesure (2) présentant une section de mesure (3), qui est monté dans une zone du boîtier de mesure (7). Pour permettre un examen aux ultrasons de la section de mesure (3), dans le sens d'écoulement d'un milieu et dans le sens inverse, ainsi que pour enregistrer des signaux, ledit système de mesure ultrasonore (1) comporte comme capteurs au moins deux émetteurs-récepteurs ultrasonores montés à distance mutuelle. L'invention vise également à mettre au point un système de mesure ultrasonore (1) simple et économique à produire, qui présente un diamètre nominal réduit et permette un examen aux ultrasons direct de la section de mesure (3), avec la puissance d'émission la plus faible possible. A cet effet, il est prévu que le tube de mesure (2) soit conçu d'un seul tenant avec le boîtier de mesure (4), sans joint et sans soudure, et que le parcours des ondes sonores forme un angle aigu avec le sens d'écoulement du milieu.
EP09734184.6A 2008-04-21 2009-02-20 Système de mesure ultrasonore Active EP2269011B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008019992A DE102008019992B4 (de) 2008-04-21 2008-04-21 Ultraschall-Messanordnung
PCT/EP2009/001245 WO2009129884A1 (fr) 2008-04-21 2009-02-20 Système de mesure ultrasonore

Publications (2)

Publication Number Publication Date
EP2269011A1 true EP2269011A1 (fr) 2011-01-05
EP2269011B1 EP2269011B1 (fr) 2016-12-07

Family

ID=40872283

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09734184.6A Active EP2269011B1 (fr) 2008-04-21 2009-02-20 Système de mesure ultrasonore

Country Status (4)

Country Link
US (1) US8091435B2 (fr)
EP (1) EP2269011B1 (fr)
DE (1) DE102008019992B4 (fr)
WO (1) WO2009129884A1 (fr)

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JP6625116B2 (ja) * 2014-07-25 2019-12-25 ケイピーアール ユーエス エルエルシー 流量制御装置
US9714855B2 (en) 2015-01-26 2017-07-25 Arad Ltd. Ultrasonic water meter
US20170212082A1 (en) * 2016-01-21 2017-07-27 Introtek International Ultrasonic fittings
CN106441606A (zh) * 2016-10-25 2017-02-22 伊玛精密电子（苏州）有限公司 一种卫生级耐腐蚀型温度传感器
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US10254143B2 (en) 2017-01-13 2019-04-09 Georg Fischer Signet Llc Fluid-flow sensor assembly having reinforced body
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Also Published As

Publication number Publication date
DE102008019992B4 (de) 2010-07-01
DE102008019992A1 (de) 2009-10-29
EP2269011B1 (fr) 2016-12-07
WO2009129884A8 (fr) 2010-02-18
US8091435B2 (en) 2012-01-10
US20110088483A1 (en) 2011-04-21
WO2009129884A1 (fr) 2009-10-29

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